Presentation

• Frames

Author

• David Dozier

Abstract

Known as the Garden Isle for its picturesque beauty, Kauai is a 550 square mile island whose geographic centerpiece, the mile-high Mount Waialeale, receives more rain than any other place on earth. Potable water for the island is provided by a 100% ground water-based system operated by the County of Kauai, Department of Water (KDOW). The water system includes a series of wells, intake shafts (basically a sump that naturally fills with water which is equipped with a pump), and tunnels (basically free flowing ground water sources) organized into a number of hydraulically independent “zones.” Each zone consists of one or more wells (including intake shafts and tunnels), tanks, and in some cases booster stations (tank-to-tank boosters as well as some in-line pressure boosting stations). The water system is distributed over a large geographic area providing water to population centers throughout the island. There are approximately 17,000 meters in the KDOW system and an average system demand of approximately 11 MGD. Ultimately, KDOW envisions a system with as many as 125 remote sites. From the present 86 sites, the system will grow six to seven sites a year for the next five years.

For this project, Timberline designed a SCADA system with state-of-the-art architecture and features. In addition, new “technology tools” were utilized during the design of the project. These “technology tools” include a web-enabled design database and document management system (DMS). The web-enabled design database allows an authorized user to create, modify, and review the SCADA I/O database from any computer with web access, resulting in greater accuracy, fast and easy data input, real-time and remote reviews, flexible report generation, and lower system integration costs. The design phase DMS allows an authorized user access to key project information including design criteria, meeting notes, schedule, drawings, specifications, and photos. Similarly, the construction phase DMS will allow access to conformed drawings and specifications, revisions (addenda/field orders), submittals (log and comments), and requests for information (RFIs). The benefits of the DMS are client/contractor/engineer access, real-time sharing of information, everyone is on the same page, and reduced cycle time.

The SCADA system itself is of hierarchical design and includes the following features: enterprise-class network, SQL database, primary domain controller, VPN concentrator, firewalls, WAN router, antivirus software that provides daily updates, frame relay connection to Submaster RTUs, spread-spectrum radio technology connection between submasters and remote RTUs, real-time communication system performance monitoring and reporting, enhanced remote reporting and access, and hurricane and corrosive atmosphere survivability.

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